When adding a gesture (addGestureRecognizer) to a view in the UIView derived class, Xcode throws an error. What's wrong?

Question

iOS

I want to implement the delegate pattern by passing a notification from the view to the controller that the UITapGestureRecognizer has worked.
When adding a gesture (addGestureRecognizer) to a view in the UIView descendant class, Xcode gives an error:
Instance member 'addGestureRecognizer' cannot be used on type 'GesterView'

Moreover, if you add a gesture in the controller, there is no error, everything is ok.
Thanks in advance for any help!

Answer 1

I can assume, because there is no self-a. Because it is a class function